/*
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 * and open the template in the editor.
 */
package servlets;

import java.io.IOException;
import java.sql.SQLException;
import javabeans.JBUsuario;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.UnavailableException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import persistencia.ISistema;

/**
 * 
 * @author bruno
 */
public class loginServlet extends HttpServlet {

    ISistema i;

    @Override
    public void init() throws ServletException {
        /*Se adquieren los parametros configurados en el deployment describer a 
         * nivel del contexto*/
        try {
            ServletContext context = this.getServletContext();
            i = persistencia.Fabrica.getPersistenciaSistema(context);

        } catch (Exception exc) {
            throw new UnavailableException("No se puedo instanciar el servlet" + exc.toString());
        }
    }

    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");

        HttpSession session = request.getSession();

        try {
            //Obtengo los parametros
            String user = request.getParameter("login");
            String pass = request.getParameter("password");

            //Pregunto si no se encuentran en null
            if (user != null && pass != null) {

                JBUsuario usuario = i.login(user, pass);

                //Si no se loguea muestra error de lo contrario redirecciona al listado de peliculas
                if (usuario != null) {

                    session.setAttribute("login", usuario);
                    response.sendRedirect("listadoPeliculas");
                } else {
                    request.setAttribute("error", "Usuario / Password Invalido");
                    request.getRequestDispatcher("login.jsp").forward(request, response);
                }
            } else {
                request.setAttribute("error", "Usuario / Password no pueden estar en blanco");
                request.getRequestDispatcher("login.jsp").forward(request, response);
            }

        } catch (SQLException ex) {
            request.setAttribute("error", ex.getMessage());
            request.getRequestDispatcher("login.jsp").forward(request, response);
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
